Figure 2
Conditioned responses after the SC inactivation. (A) Schema of the experimental design to determine the effects of inactivating the SC. Visual CSs were presented to the visual field contralateral to the intact V1, and muscimol was injected into SC ipsilateral to the intact V1. (B) Latencies of visually guided saccades from the target onset. The latencies of saccades to the muscimol-affected visual field (45°) were prolonged during SC inactivation, while saccades to the other target locations were unaffected. Numerals in individual plots indicate difference of latencies (in ms) between before and after the muscimol injection. (C) Typical examples of licking behavior before (left two panels) and during the SC inactivation (right two panels) in each monkey (monkey K; upper two panels, monkey T; lower two panels). Gray hatch areas indicate the period of CS presentation, dashed lines indicate time of reward delivery in LR (red) and SR (blue) trials. (D) Average of difference in licking rate between LR and SR trials. There was no significant difference between before and during the SC inactivation in both monkeys (Wilcoxon signed-rank test, α < 0.05).
